Caddy Catera multiple codes

97 Catera Opel motor  He brought it to autosome, they scanned it told him to replace O2s both of em he did they,,
 
check engine light on I scanned Once Got  Fuel temp high code , maf vaf codes, p0330 undefined too
 
Just did a prelim scan diag for $50,, suspect he's been beating the bag out ofit, possible cat maf problem, not familiar at alll with this car ANy other suggestions 02s code with the maf leads me to think cat
 
Thanks Tone